Consider the insoluble compound aluminum phosphate , AlPO4 . The aluminum ion al

Question

Consider the insoluble compound aluminum phosphate , AlPO4 . The aluminum ion also forms a complex with hydroxideions . Write a balanced net ionic equation to show why the solubility of AlPO4 (s) increases in the presence of hydroxide ionsand calculate the equilibrium constant for this reaction.
For Al(OH)4- , Kf = 7.7×10^33 . Use the pull-down boxes to specify states such as (aq) or (s).

balanced net ionic equation: K =
(1st picture corresponds to the question I am asking/ please clearly label and show all work) (2nd picture example of this type of problem)

Explanation / Answer

The molecular equation:

the net ionic

AlPO4(s) + 4OH-(aq) <--> Al(OH)4-(aq) + PO43-(aq)

as expected, the salt is now in solution

K = [Al(OH)4-][PO43-] / [OH-]^4

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